Hennessey has 850-hp option for 2024 Ford Mustang Dark Horse

The redesigned 2024 Ford Mustang isn’t even in showrooms yet but Texas tuner Hennessey Performance already has an upgrade for the track-focused Mustang Dark Horse variant that boosts output to 850 hp. But the performance upgrade will cost $49,950 on top of what you pay for the Mustang Dark Horse. The new Mustang is slated to arrive at dealer lots…